#ifndef _LINUX_COMPAT_H
#define _LINUX_COMPAT_H
/*
 * These are the type definitions for the architecture specific
 * syscall compatibility layer.
 */

#ifdef CONFIG_COMPAT

#include <linux/stat.h>
#include <linux/param.h>	/* for HZ */
#include <linux/sem.h>

#include <asm/compat.h>
#include <asm/siginfo.h>
#include <asm/signal.h>

#define compat_jiffies_to_clock_t(x)	\
		(((unsigned long)(x) * COMPAT_USER_HZ) / HZ)

typedef __compat_uid32_t compat_uid_t;
typedef __compat_gid32_t compat_gid_t;

struct rusage;

struct compat_itimerspec {
	struct compat_timespec it_interval;
	struct compat_timespec it_value;
};

struct compat_utimbuf {
	compat_time_t actime;
	compat_time_t modtime;
};

struct compat_itimerval {
	struct compat_timeval it_interval;
	struct compat_timeval it_value;
};

struct compat_tms {
	compat_clock_t tms_utime;
	compat_clock_t tms_stime;
	compat_clock_t tms_cutime;
	compat_clock_t tms_cstime;
};

struct compat_timex {
	compat_uint_t modes;
	compat_long_t offset;
	compat_long_t freq;
	compat_long_t maxerror;
	compat_long_t esterror;
	compat_int_t status;
	compat_long_t constant;
	compat_long_t precision;
	compat_long_t tolerance;
	struct compat_timeval time;
	compat_long_t tick;
	compat_long_t ppsfreq;
	compat_long_t jitter;
	compat_int_t shift;
	compat_long_t stabil;
	compat_long_t jitcnt;
	compat_long_t calcnt;
	compat_long_t errcnt;
	compat_long_t stbcnt;
	compat_int_t tai;

	 compat_int_t:32;
	 compat_int_t:32;
	 compat_int_t:32;
	 compat_int_t:32;
	 compat_int_t:32;
	 compat_int_t:32;
	 compat_int_t:32;
	 compat_int_t:32;
	 compat_int_t:32;
	 compat_int_t:32;
	 compat_int_t:32;
};

#define _COMPAT_NSIG_WORDS	(_COMPAT_NSIG / _COMPAT_NSIG_BPW)

typedef struct {
	compat_sigset_word sig[_COMPAT_NSIG_WORDS];
} compat_sigset_t;

extern int get_compat_timespec(struct timespec *,
			       const struct compat_timespec __user *);
extern int put_compat_timespec(const struct timespec *,
			       struct compat_timespec __user *);

struct compat_iovec {
	compat_uptr_t iov_base;
	compat_size_t iov_len;
};

struct compat_rlimit {
	compat_ulong_t rlim_cur;
	compat_ulong_t rlim_max;
};

struct compat_rusage {
	struct compat_timeval ru_utime;
	struct compat_timeval ru_stime;
	compat_long_t ru_maxrss;
	compat_long_t ru_ixrss;
	compat_long_t ru_idrss;
	compat_long_t ru_isrss;
	compat_long_t ru_minflt;
	compat_long_t ru_majflt;
	compat_long_t ru_nswap;
	compat_long_t ru_inblock;
	compat_long_t ru_oublock;
	compat_long_t ru_msgsnd;
	compat_long_t ru_msgrcv;
	compat_long_t ru_nsignals;
	compat_long_t ru_nvcsw;
	compat_long_t ru_nivcsw;
};

extern int put_compat_rusage(const struct rusage *,
			     struct compat_rusage __user *);

struct compat_siginfo;

extern asmlinkage long compat_sys_waitid(int, compat_pid_t,
					 struct compat_siginfo __user *, int,
					 struct compat_rusage __user *);

struct compat_dirent {
	u32 d_ino;
	compat_off_t d_off;
	u16 d_reclen;
	char d_name[256];
};

typedef union compat_sigval {
	compat_int_t sival_int;
	compat_uptr_t sival_ptr;
} compat_sigval_t;

#define COMPAT_SIGEV_PAD_SIZE	((SIGEV_MAX_SIZE/sizeof(int)) - 3)

typedef struct compat_sigevent {
	compat_sigval_t sigev_value;
	compat_int_t sigev_signo;
	compat_int_t sigev_notify;
	union {
		compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
		compat_int_t _tid;

		struct {
			compat_uptr_t _function;
			compat_uptr_t _attribute;
		} _sigev_thread;
	} _sigev_un;
} compat_sigevent_t;

struct compat_robust_list {
	compat_uptr_t next;
};

struct compat_robust_list_head {
	struct compat_robust_list list;
	compat_long_t futex_offset;
	compat_uptr_t list_op_pending;
};

extern void compat_exit_robust_list(struct task_struct *curr);

asmlinkage long
compat_sys_set_robust_list(struct compat_robust_list_head __user * head,
			   compat_size_t len);
asmlinkage long
compat_sys_get_robust_list(int pid, compat_uptr_t __user * head_ptr,
			   compat_size_t __user * len_ptr);

long compat_sys_semctl(int first, int second, int third, void __user * uptr);
long compat_sys_msgsnd(int first, int second, int third, void __user * uptr);
long compat_sys_msgrcv(int first, int second, int msgtyp, int third,
		       int version, void __user * uptr);
long compat_sys_msgctl(int first, int second, void __user * uptr);
long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
		      void __user * uptr);
long compat_sys_shmctl(int first, int second, void __user * uptr);
long compat_sys_semtimedop(int semid, struct sembuf __user * tsems,
			   unsigned nsems,
			   const struct compat_timespec __user * timeout);
asmlinkage long compat_sys_keyctl(u32 option, u32 arg2, u32 arg3, u32 arg4,
				  u32 arg5);

asmlinkage ssize_t compat_sys_readv(unsigned long fd,
				    const struct compat_iovec __user * vec,
				    unsigned long vlen);
asmlinkage ssize_t compat_sys_writev(unsigned long fd,
				     const struct compat_iovec __user * vec,
				     unsigned long vlen);

int compat_do_execve(char *filename, compat_uptr_t __user * argv,
		     compat_uptr_t __user * envp, struct pt_regs *regs);

asmlinkage long compat_sys_select(int n, compat_ulong_t __user * inp,
				  compat_ulong_t __user * outp,
				  compat_ulong_t __user * exp,
				  struct compat_timeval __user * tvp);

asmlinkage long compat_sys_wait4(compat_pid_t pid,
				 compat_uint_t __user * stat_addr, int options,
				 struct compat_rusage __user * ru);

#define BITS_PER_COMPAT_LONG    (8*sizeof(compat_long_t))

#define BITS_TO_COMPAT_LONGS(bits) \
	(((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)

long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user * umask,
		       unsigned long bitmap_size);
long compat_put_bitmap(compat_ulong_t __user * umask, unsigned long *mask,
		       unsigned long bitmap_size);
int copy_siginfo_from_user32(siginfo_t * to,
			     struct compat_siginfo __user * from);
int copy_siginfo_to_user32(struct compat_siginfo __user * to, siginfo_t * from);
int get_compat_sigevent(struct sigevent *event,
			const struct compat_sigevent __user * u_event);

static inline int compat_timeval_compare(struct compat_timeval *lhs,
					 struct compat_timeval *rhs)
{
	if (lhs->tv_sec < rhs->tv_sec)
		return -1;
	if (lhs->tv_sec > rhs->tv_sec)
		return 1;
	return lhs->tv_usec - rhs->tv_usec;
}

static inline int compat_timespec_compare(struct compat_timespec *lhs,
					  struct compat_timespec *rhs)
{
	if (lhs->tv_sec < rhs->tv_sec)
		return -1;
	if (lhs->tv_sec > rhs->tv_sec)
		return 1;
	return lhs->tv_nsec - rhs->tv_nsec;
}

extern int get_compat_itimerspec(struct itimerspec *dst,
				 const struct compat_itimerspec __user * src);
extern int put_compat_itimerspec(struct compat_itimerspec __user * dst,
				 const struct itimerspec *src);

asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user * tv,
					struct timezone __user * tz);
asmlinkage long compat_sys_settimeofday(struct compat_timeval __user * tv,
					struct timezone __user * tz);

asmlinkage long compat_sys_adjtimex(struct compat_timex __user * utp);

extern int compat_printk(const char *fmt, ...);
extern void sigset_from_compat(sigset_t * set, compat_sigset_t * compat);

asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
					 compat_ulong_t maxnode,
					 const compat_ulong_t __user *
					 old_nodes,
					 const compat_ulong_t __user *
					 new_nodes);

extern int compat_ptrace_request(struct task_struct *child,
				 compat_long_t request,
				 compat_ulong_t addr, compat_ulong_t data);

extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
			       compat_ulong_t addr, compat_ulong_t data);
asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
				  compat_long_t addr, compat_long_t data);

/*
 * epoll (fs/eventpoll.c) compat bits follow ...
 */
struct epoll_event;
#define compat_epoll_event	epoll_event
asmlinkage long compat_sys_epoll_pwait(int epfd,
				       struct compat_epoll_event __user *
				       events, int maxevents, int timeout,
				       const compat_sigset_t __user * sigmask,
				       compat_size_t sigsetsize);

asmlinkage long compat_sys_utimensat(unsigned int dfd, char __user * filename,
				     struct compat_timespec __user * t,
				     int flags);

asmlinkage long compat_sys_signalfd(int ufd,
				    const compat_sigset_t __user * sigmask,
				    compat_size_t sigsetsize);
asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
					   const struct compat_itimerspec __user
					   * utmr,
					   struct compat_itimerspec __user *
					   otmr);
asmlinkage long compat_sys_timerfd_gettime(int ufd,
					   struct compat_itimerspec __user *
					   otmr);

asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_page,
				      __u32 __user * pages,
				      const int __user * nodes,
				      int __user * status, int flags);
asmlinkage long compat_sys_futimesat(unsigned int dfd, char __user * filename,
				     struct compat_timeval __user * t);
asmlinkage long compat_sys_newfstatat(unsigned int dfd, char __user * filename,
				      struct compat_stat __user * statbuf,
				      int flag);
asmlinkage long compat_sys_openat(unsigned int dfd,
				  const char __user * filename, int flags,
				  int mode);

#endif /* CONFIG_COMPAT */
#endif /* _LINUX_COMPAT_H */
